Peters



(No Model 2 Sheets-Sheet 1.

, y T. H. HOVENDEN.

CALENDAR.

Patented Feb. 21,1882.

Zmvefzoz" mammmtofrJe/r @gi/'figg (Hommel.) 2 sheets-sheet T. H. HOVBNDEN.

, CALENDAR. 4 No. 254,014. Patented Feb.f21, 1882.

` .Figa I .est I l l I [mien/bor 17m/:raaf ve/rofc/r M www' y f UNITED STATES PATENT OFFICE. i

THOMAS H. HOVENDEN, OF INGERSOLL, ONTARIO, CANADA.

CALENDAR.

,SPECIFICATION formingpart of Letters Patent No. 254,014, dated February 21, 1882. Application filed October 29, 1881. (No model.)

To all whom it may concern: .i l v Be'itknown that I, THoMAs H. HOVENDEN, of Ingersoll, in thecount-y of Oxford and Province of Ontario, Canada, have invented a new and useful Improvement in Calendars; `and I do hereby declare that the 'following is a full, clear, and exact description of the same.

My invention relates to perpetual calendars, and is an improvement upon the apparatus shown in an 'application iiled by me on the 14th day of July, 1881.

It consists principally in combining with the essential features ofthe machine shownin said vapplication a varying stop mechanism, whereby the cylinder carrying the numbers ofthe days of the month is arrested at different points for the months differing in length.

1t consists also of certain improved details, all of which are hereinafter fully explained, and particularly indicated in the claims.

In 4the apparatus described in my said application motion was permitted to the cylinder which bore the consecutively-arranged numbers of thedays of the months, so as to include the number 3l and to bring it into position before the aperture in the front of the case. At that point, and at that only, motion of this cylin'der in this direction was arrested, sothat the operator, at the end of a month having a ljess number of days than thirty-one, would becom pelled to takecarenottoturn thecylinderanoth'- er step and show an incorrect record-an incident not unlikely to happen if the person using the apparatus were shiftingit as a matter of habit, and not with special attention. r

To render the machine automatic in this respect I have devised and applied a variable stop, whichwill permit the cylinder to run to include the number 31 for all months having that number of days, but will arrest it at the proper point before reaching'that number for shorter months. This renders the apparatus more accurate and self-regulating.

online x 00 of Fig-1.

In the accompanying drawings, Figure 1 is a central longitudinal section ofthe apparatus, `with the shaft and spiral in side elevation. Fig. 2 is a transverse section ofthe apparatus l j Fig. 3 represents the shaft, with the heads of the cylinders and case', thecylinders and case being in section. l Fig. 4

represents two sides of thehead of the monthweek and the names of the months, and the same arrangement of cylinders carrying the numbers of the Idays of the month, andthe stop mechanism is operated upon in a like manner as in the machine referred to by a pin carried by the numeral-cylinder, which moves longitudinally upon the shaft. In these drawings this main shaft is indicated at 1. The cylinder. which carries the unitiigures of the daynumbers is marked 6,'this being supported upon a wheel, 7, tixed on the main shaft. The cylinder 2, carrying the decimal numbers, is moved longitudinally on the shaft by the fixed spiral 8. The cylinder 2 is turned With the shaft by means of a spline, 5, on which it slides longitudinally at the same time. In the previous machine the moving cylinder 2 carried a pin projecting from its head 4, held rigidly' therein, which pin, as the cylinder2 advanced up to the head 7, projected throughv said head and struck on the front side of theweighted projection '96, moving said projection tothe rear, and moving a pawl, 36, attached to the pin 35 in the upper part of said weighteddisk to the front, thereby turning the' month-cylinder one step. The cylinder2 in its movement the other way-thatis to say, in its direct movement-was stopped by a fixed pin in the other end coming against a fixed shoulder in the headof the fixed case.

In the present invention thestop-pin is modified and is made movable. It is shown at46, and is adapted to be moved alternately in or out of the heads 4 and 7, moving freely in an enlargedhole in head 4 and closely in head 7, with a bearing in the eyeof pin 47. This movement is accomplished by means of a lever, 45, pivoted upon the main shaft 1, and extending across the same. It is provided with a spring.

.by means of which the end to which the rod 46 is attached is automatically thrown back to retract the rod withinthe head 7.

The lever 45 is moved in opposition to the spring `by means of a'stud, 48,f1xed in the head IOO ' three different lengths of mouths.

4. It will therefore be observed that as the head 4 moves to the left in the revolution of the cylinder 2 from front over to rear to show the numbers increasing in their direct order, and as it approaches the end it brings the pin 48 against the lever 45 and thrusts forward the rod 46 through the head 7. The motion of the lever is rendered sufficient by the adjustment of the parts to thrust the rod 46 sut'- iiciently forward to bring the end of it into the path ot' the offset 96 on the rear side thereof, and this acts as a stop to limit the movement of the cylinder in that direction. The position of the offset 96 will determine thc position at which the cylinder 2, and with it the cylinder 6, shall stop. This position is varied, and is determined by the peculiar construction and adaptation of the mechanism used in connection with thewcighted disk.

It will be observed that the rod 46 is thrust forward in the manner described, both when the cylinder 2 is advancing near its limit to the right, and when it approaches, also,its extreme limit at the left. The advance caused by the movement to the left has been described. The righthand movement brings the stud 49 against thelever 45 and pushes the pin directly out; but movement to the right ot' cylinder 2 takes place when the cylinder is turned backward to bring the numerals in their reverse order. It turns to zero-that is, to bring zero to the aperture, and when it reaches that point the rod 46 is thrust through the head 7 into the path of the oifset 96, but ou the opposite or front side. This also forms a stop which is made invariable, as the motion imparted to the weighted disk brings the pin 35 against the end of the slot in which it moves.

I proceed now to describe the construction ofthe parts connected to the weighted disk, the offset of which arrests on both sides the movement of the pin and the revolution of the cylinder 2.

The slot in the head 1l, against which the weighted wheel is placed, is about three times the length of that in the form described in my Vformer application, heretofore mentioned, and the weighted wheel has three times the possible movement. It will be borne in mind that the number-cylinders have an upward surfacemovement in front when changing the daily record in its advancing order, and therefore the pin, when projected at the last of the month, will strike the rear side ot' the projection on the weighted disk. This disk therefore is held to three various positions corresponding to the When held with the odset farthest to the rear, or in such position that the pin will strike earlier, the number-cylinder is arrested when the number 29 is displayed, (that being the maximum of February, and no note being taken of its variations,) when in a second position less removed to the rear the cylinder is stopped when the figure 30 is displayed, and the last position of the weighted disk permits movement of the numeral-cylinder to the number 31. This adjustment is accomplished by means of a latch, 37, on the side of the case-head 11 opposite the weighted disk, as shown in Fi/g.5, which shows the outer face of the case-head and the weighted disk behind it in dotted lines. This latch is pivoted at the end of a curved slot, 38, similar to the upper slot in said head, in which moves apin, 39, set in the face of the weighted disk. This slot is on the lower side of the head, as shown in Fig. 5, and the latch drops by gravity. It has three eq'uidistant shoulders, lm u, and when the latch is at its lowest limit the first stop, I., arrests the pin, and thereby the weighted wheel, in position adapted to bring the offset in place to stop the cylinder at the figure 29. Raised a trifle higher, the latch lets the pin pass to the second step, m, and higher still, to the last step, a, thus arresting the cylinder at the numbers 30 and 3l respectively.

The position of the latch is regulated by means of an arm, 40, attached thereto, and made in the shape shown, to permit it to ride over pins 41, projecting inwardly on the monthcylinder head. There are three rows of pins thus projecting on this head. The innery row, 42, twelve in number, are to operate in connection -with the pawl. The two outer rows act with the arm of the latch. Referring toFig. 4, which shows the faces of this wheel, (the left-hand ligure being the outer and the righthand the inner,) aspace, 43, will be observed. Into this the arm of the latch is arranged to drop when the month of February is recorded, allowing the latch to fall to its lowest position. The next piu is on the inner circle ofthe-two last mentioned, and lifts the latch to its eX- treme limit for along month, March. The next pin represents a thirty-day month, April, and lifts the latch to the intermediate position. The other pins (there being eleven in all) will be observed to be arranged in their proper order for the months following. vObviously by this arrangement the pawl sometimes moves through two and three spaces. In order that it maynot act on more than one pin at a' time, I have arranged a shield, 44, over the pawlpins, so that the pawl for the second or third space rests on the shield, and cannot; act on more than one of the pins at a time. An arm, 55, prevents too great outward movement of the pawl, which might cause the ypawl to be entangled with the outer pins.

From the description given of these parts it will be understood that the position of the latch is determined bythe pins set in the inner face of the head-of the month-cylinder, and that the position of the latch determines the position at which the pin 89 is arrested, and consequently the positionl of the wei ghted disk, the oiiset of which,on the rear side, acts as astop to limit vthe direct movement of the numbercylinder. Obviously the action of the parts .will be the same, whether the cylinder 2- telescopes into the cylinder 6, and the numbers of the cylinder 2 are used as decimals of the unit figures on cylinder 6, or whether the cylinder IOS 2 be used alone. Under some circumstances this latter condition maybe observed. rlhe action of the pawl 35, when the motion of the cylinder is reversed for the commencement of the record of a new month, is the same as that in my said application. The construction of the pawl, however, in respect to its connections is somewhat simplified.

In the former application the pawl was mounted upon a screw bearing on the smooth shank of the screw which held it to the weighted disk. In the present construction I form the pawl with an elongated eye, the elongation being sufficient to pass through the head 1l and bear against the surface of the disk. For its support a plain pin is inserted in thedisk, over which the eye of the pawl is slipped. When the parts are in position the pawl is held in place by the head of the month-cylinder", and requires lno other fastening. 'This makes a cheaper and simpler construction.

In this machine, also, I have discarded the ferrules upon which the heads of the cylinders turn, and have placed these heads or wheels directly upon the shaft. The construction of the apparatus is such throughout that considerable play is allowed without interfering in any respect with the accuracy of its working, and no such closeness of fit is required as to occasion any appreciable friction or require eXtreme accuracy in manufacture.

I have also modified and improved the pawl which holds with a yielding grasp the wheel 16. It will be borne in mind that this wheel is fixed to the shaft which also carries by positive movement the numeral-cylinder, and therefore requires to be accurately held in order properly to center the figures Vat the aperture. This I accomplished in my former application by means of a loose wheel upon the pawl, which wheel rode freely over the pins and found lodginent between them. The parts, however,were expensive to make, and I have accomplished the same object by a much simplerl device. This consists of a spring-pawl, 23, formed in Yone piece with the pawl 19, which latter acts upon the head of the week-cylinder 13. The coil ofthe two spring-pawls forms the eye,Which is slipped upon a plain stud, 24, upon which itis held simply by the pawls themselves,which pass up on opposite sides of the wheel 16. rIhe centering action of the pawl23is accomplished by the V-sha'ped bend, the legs of which are made long enough to rest upon the pins when the V is accurately centered, as shown in Fig.

sumes in relation to the pins, which position accurately centers the numbers at the aperture. When the ferrules were used the weighted disk was secured on one end and had free play thereon, exempt from any crowding from the heads of the fixed case 10. I secure this disk now from friction between the head 11 and the shoulder on the main shaft by means ot' a pin, 26, set in the shaft. (-)ther pins, 25, hold the heads of the week and month cylinders in place.

Having thus described my invention, what I claim isl. In combination with the cylinder of a calendar having characters indicating the numbers of the days of the month, and adapted to turn to bring these characters successively to view, and with afcylinder carrying theV names of the months arranged in proper order, a variable arresting device, substantially as described, regulated by the month-cylinder and adapted. to arrest the numeral-cylinder at the proper point for each month, substantially as set forth,

2. The combination of acylinder having stop pin or rod and turning on'its axis to bring successive numbers representing days ofthe month ing on pin 39 of the weighted disk, suhstanv tially as described.

3. The combinationl of the weighted disk, having offset adapted to act in connection with stop pin or rod on the cylinder, and carrying pawl 35, the latch pivoted on the head ll, having stops to act o n pin 39 in weighted disk, and arm 40, adapted to be operated upon by the pins upon the head of the month-cylinder,V the whole constructed and operating substantially as described.

4. The improved double pawl 19 23, formed out of one piece of wire, having an eye formed to fit over its holding-pin, and with the pawls extending on opposite sides of the wheel, saidV pawls being formed with Vshaped bends to form yielding stops, and adapted to the pins of the wheel and head and in combination therewith, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THOS. H. HOVENDEN.

Witnesses:

L. W. SEELY,

F. L. MinDLE'roN.

IOO 

